potassium cyanide kahan milta hai in hindi for Dummies
Cyanide is principally made to the mining of silver and gold: It can help dissolve these metals allowing for separation from the other solids. In the cyanide procedure, finely ground high-grade ore is mixed with the cyanide (in a ratio of about one:five hundred areas NaCN to ore); very low-grade ores are stacked into heaps and sprayed with a cyanid